add_img_water

A PDF tool that places an image, such as a logo, onto a PDF as a watermark.

In plain words
What is it for?
Adding logos or other image watermarks to PDF files.
Why use it?
It avoids adding the watermark manually to each document. You provide the PDF, watermark image, and output file paths.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/coderwanfeng/python-office/add_img_water
Any agent
npx skills add CoderWanFeng/python-office --skill add_img_water
Clone the repo
git clone --depth 1 https://github.com/CoderWanFeng/python-office

Made for: Claude Code, Codex.

Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 360 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00029 $0.00360
Opus 5 $0.00015 $0.00180
Sonnet 5 $0.00006 $0.00072
Haiku 4.5 $0.00003 $0.00036

Measured 2d ago against content hash 0f77b4adf966, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

add_img_water scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (__init__.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/pdf/add_img_water/SKILL.md · 59 lines

What it actually says

add_img_water Skill

给 PDF 文件添加图片水印

功能描述

向 PDF 文件添加图片作为水印。

所属分类

office/skills/pdf/add_img_water/

调用方式

from skills.pdf import add_img_water

add_img_water(
    input_file='./test.pdf',
    mark_file='./watermark.png',
    output_file='./with_watermark.pdf'
)

参数说明

参数 类型 必填 默认值 说明
input_file str - 输入 PDF 文件路径
mark_file str - 水印图片文件路径
output_file str - 输出 PDF 文件路径
pdf_file_in str - [已弃用] 请使用 input_file
pdf_file_mark str - [已弃用] 请使用 mark_file
pdf_file_out str - [已弃用] 请使用 output_file

返回值

None

使用示例

from skills.pdf import add_img_water
add_img_water(
    input_file='./report.pdf',
    mark_file='./logo.png',
    output_file='./with_watermark.pdf'
)

原始函数

office.api.pdf.add_img_water

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 59 lines · 29 tokens per session scan A 0f77b4adf966

Subscribe to this mod's changes

add_img_water is a skill published in the GitHub repository CoderWanFeng/python-office (1,348 stars, last pushed 13d ago), licensed Apache-2.0. It adds 29 tokens to every session and 360 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.